According to EU news website Politico, the fines have been delayed for Marriott until 1 June this year, with UK law firm Mishcon de Reya's data protection man Jon Baines blogging, with reference to the same source, that BA owner IAG's annual report revealed that its own fine had been postponed until 18 May.

That statement [212-page PDF, statement on page 184] said in part: "The ICO initially had six months from issuing the Notice of Intent to British Airways within which it could issue a penalty notice, which has been extended through to May 18, 2020, to allow the ICO to fully consider the representations and information provided by British Airways."

It added that BA would "vigorously defend" itself all the way to the Court of Appeal if needed, suggesting the airline isn't going to let the ICO collect a cheque without a fight.

The ICO would not comment other than to say the process was "ongoing".

British (and thus EU) data protection law is convoluted when it comes to fines: the ICO announces its intention to impose a big monetary penalty and then the naughty companies have a chance to argue about it behind closed doors, a bit like an appeal.

So it was that BA and Marriott managed to have their fines postponed in January for three months while lawyers argued about it.